One-Pan Lemon Herb Chicken Thighs with Roasted Brussels Sprouts & Sweet Potatoes

Some nights call for a dinner that tastes like it took real effort but actually comes together on a single sheet pan. This lemon herb chicken thighs recipe is exactly that: juicy, golden chicken thighs roasted alongside caramelized Brussels sprouts and tender sweet potatoes, all seasoned with garlic, fresh herbs, and a bright squeeze of lemon. It’s the kind of fall weeknight dinner that feels cozy without weighing you down, and it leaves you with almost nothing to scrub afterward.

Beyond the convenience, this dish is a genuinely balanced plate: a satisfying protein, two fiber-rich vegetables, and healthy fats from olive oil, all roasted together so the flavors meld. Below you’ll find the full recipe, a nutrition breakdown of why these particular ingredients earn their place on your plate, and tips for getting crisp vegetables and perfectly cooked chicken every time.

Why This One-Pan Dinner Works

One-pan dinners earn their popularity for a reason: everything cooks at the same temperature, in the same amount of time, and cleanup is a single sheet pan instead of a stack of dishes. Chicken thighs are especially well suited to this method because their higher fat content keeps them moist even at high roasting temperatures, while leaner cuts like chicken breast can dry out before the vegetables finish. Cutting the Brussels sprouts and sweet potatoes to a similar size means they roast at roughly the same rate, so nothing ends up underdone or burnt.

Ingredients You’ll Need

• 4 bone-in, skin-on chicken thighs (or boneless, skinless if you prefer)
• 1 lb Brussels sprouts, trimmed and halved
• 1 large sweet potato, peeled and cut into 3/4-inch cubes
• 3 tablespoons olive oil, divided
• 4 cloves garlic, minced
• 1 teaspoon dried thyme (or 1 tablespoon fresh)
• 1 teaspoon dried rosemary, crushed
• 1 lemon, zested and juiced (plus extra wedges for serving)
• Salt and freshly ground black pepper, to taste
• Optional: a pinch of red pepper flakes for heat

Step-by-Step Instructions

1. Preheat your oven to 425°F (220°C) and line a large, rimmed sheet pan with parchment paper or foil.
2. In a small bowl, whisk together 2 tablespoons olive oil, minced garlic, lemon zest, half the lemon juice, thyme, rosemary, salt, and pepper.
3. Pat the chicken thighs dry with paper towels (this helps the skin crisp) and rub them all over with about two-thirds of the herb mixture. Set aside.
4. In a large bowl, toss the halved Brussels sprouts and sweet potato cubes with the remaining olive oil and herb mixture until evenly coated.
5. Spread the vegetables in a single layer on the sheet pan, leaving space in the center and edges for the chicken. Nestle the chicken thighs among the vegetables, skin side up if using skin-on cuts.
6. Roast for 30-35 minutes, until the chicken reaches an internal temperature of 165°F (74°C) and the Brussels sprouts are browned and crisp at the edges. If using boneless, skinless thighs, start checking for doneness closer to 22-25 minutes.
7. Remove from the oven, drizzle with the remaining lemon juice, and let rest for 5 minutes before serving with extra lemon wedges.

Tips for Juicy Chicken and Perfectly Roasted Vegetables

Don’t Crowd the Pan

If the vegetables are piled on top of each other, they’ll steam instead of roast, leaving them soft rather than caramelized. Use a large sheet pan, or split the vegetables across two pans if needed, so everything has room to brown.

Cut Vegetables to a Similar Size

Sweet potato cubes and halved Brussels sprouts cook at different rates depending on size. Keeping pieces roughly uniform (around 3/4 inch) helps everything finish roasting at the same time.

Use a Meat Thermometer

Chicken thighs are fairly forgiving, but the most reliable way to avoid over- or under-cooking is an instant-read thermometer inserted into the thickest part of the thigh, away from the bone. Pull the pan once it reads 165°F (74°C).

Nutrition Benefits Breakdown

This is general nutrition information, not medical advice, but here’s why each component of this dinner pulls its weight.

Chicken Thighs: A Flavorful Protein Source

According to Healthline, a single skinless, cooked chicken thigh (about 111 grams) provides roughly 27 grams of protein, or about 25 grams of protein per 100 grams. Chicken breast is slightly higher in protein by weight, but thighs bring more fat and a richer flavor that holds up well to high-heat roasting, which is part of why they’re a popular choice for sheet-pan dinners.

Brussels Sprouts: Small Vegetable, Big Nutrition

Per Healthline’s nutrition breakdown, a half-cup of cooked Brussels sprouts (about 78 grams) contains roughly 48.4 mg of vitamin C, 109 mcg of vitamin K, and 2 grams of fiber, all for about 28 calories. Vitamin K supports normal blood clotting, vitamin C helps the body absorb non-heme iron from plant foods and supports immune function, and the fiber contributes to healthy digestion and blood sugar regulation. Brussels sprouts are also a cruciferous vegetable rich in antioxidants, which may help reduce cell damage and inflammation.

Sweet Potatoes: A Beta-Carotene Powerhouse

Harvard Health notes that sweet potatoes are higher in beta-carotene than many other vegetables and are a good source of potassium, fiber, and vitamins A and C. Beta-carotene is a plant pigment the body converts into vitamin A, which plays a role in vision and immune health. Pairing sweet potatoes with the olive oil in this recipe is a smart move nutritionally, since beta-carotene is fat-soluble and absorbs better alongside a source of dietary fat.

Make-Ahead, Storage, and Reheating

You can chop the Brussels sprouts and sweet potatoes and mix the herb-garlic-lemon marinade up to a day ahead; store them separately in the refrigerator and combine just before roasting. Leftovers keep well in an airtight container in the refrigerator for up to 4 days. For best texture, reheat in a 375°F oven or air fryer for about 8-10 minutes rather than the microwave, which can leave the vegetables soggy. This dish isn’t ideal for freezing, since roasted sweet potatoes and Brussels sprouts tend to turn mushy once thawed.

Recipe Variations to Try

• Swap the protein: Salmon fillets or boneless turkey breast work well with the same seasoning, though cooking times will differ.
• Add more vegetables: Diced red onion, carrots, or apple wedges roast beautifully alongside the Brussels sprouts for extra color and sweetness.
• Make it spicier: A pinch of red pepper flakes or a drizzle of hot honey after roasting adds a nice kick.
• Go dairy-forward: Finish the plate with a sprinkle of crumbled feta or shaved Parmesan for extra richness.

The Bottom Line

This lemon herb chicken thighs recipe proves that a healthy, satisfying dinner doesn’t need a long ingredient list or a sink full of dishes. With one sheet pan, about 35 minutes, and a handful of pantry staples, you get a meal that balances protein, fiber, and color-packed vegetables in every bite. Keep this one in your fall weeknight rotation, and don’t be afraid to make it your own with the variations above.